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I <br /> SECTION 31 23 17 -TRENCHING <br /> PART 1 GENERAL <br /> 1.1 SUMMARY <br /> A. This Section includes the requirements for excavation and backfill of all utilities, including <br /> installation of pipe bedding,pipe zone backfill, and trench backfill and related Work as <br /> shown on the Drawings and as specified. <br /> B. Section includes: <br /> 1. Excavating trenches for pipe,utility vaults and other utilities. <br /> 2. Compacted fill from top of utility bedding to final grades. <br /> 3. Trench and utility vault backfilling and compaction. <br /> C. Related Sections <br /> 1. Supplemental Information: Geotechnical report;bore hole locations and findings of <br /> subsurface materials. <br /> 1.2 REFERENCES <br /> A. American Association of State Highway and Transportation Officials: <br /> 1. AASHTO T99- Standard Specification for Moisture-Density Relations of Soils Using a <br /> 2.5-kg(5.5-1b)Rammer and a 305-mm(12-in.)Drop. <br /> B. ASTM International: <br /> I1. ASTM C403 - Standard Test Method for Time of Setting of Concrete Mixtures by <br /> Penetration Resistance. <br /> 2. ASTM D698 - Standard Test Method for Laboratory Compaction Characteristics of Soil <br /> Using Standard Effort(12,400 ft-lbf/ft3 (600 kN-m/m3)). <br /> 3. ASTM D2922 - Standard Test Method for Density of Soil and Soil-Aggregate in Place by <br /> Nuclear Methods (Shallow Depth). <br /> 4. ASTM D3017 - Standard Test Method for Water Content of Soil and Rock in Place by <br /> Nuclear Methods (Shallow Depth). <br /> 5. D4832, Standard Test Method for Preparation and Testing of Controlled Low Strength <br /> Material(CLSM)Test Cylinders. <br /> 1.3 DEFINITIONS <br /> A. Controlled Low Strength Material (CLSM): Also referred to as Flowable Fill. Lean cement <br /> concrete fill. A self-compacting, cementitious material. <br /> I <br /> Legion Golf Course Stormwater Detention Project Trenching <br /> WO#UP3620 31 23 17 - 1 <br />